Home / 20,407,823.78-28,161,733.92-12,672,701.24

Finding the Fourth Proportional to 20,407,823.78, 28,161,733.92 and 12,672,701.24

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Solution

The fourth proportional to 20,407,823.78, 28,161,733.92 and 12,672,701.24 is: 17,487,667.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,823.78 : 28,161,733.92 = 12,672,701.24 : x
  2. Step 2: Convert to fraction form
    20,407,823.78/28,161,733.92 = 12,672,701.24/x
  3. Step 3: Cross multiply
    20,407,823.78x = 28,161,733.92 × 12,672,701.24
  4. Step 4: Simplify right side
    20,407,823.78x = 356,885,240,227,725.38
  5. Step 5: Solve for x
    x = 356,885,240,227,725.38/20,407,823.78
  6. Step 6: Final answer
    x = 17,487,667.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.